ISBN-13: 9781512048971 / Włoski / Miękka / 2015 / 160 str.
A Muslim-Christian debate is said to have taken place in 829. Bishop Abu Qurrah of Harran is said to have debated the Muslim elites of Quraysh, as well as other scholars from different centers of Islam. This debate boasted the presence and participation of the Caliph al-Ma'mun.